emacs / Makefile.in

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# DIST: This is the distribution Makefile for Emacs.  configure can
# DIST: make most of the changes to this file you might want, so try
# DIST: that first.

# make all	to compile and build Emacs.
# make install	to install it.
# make TAGS	to update tags tables.
#
# make clean  or  make mostlyclean
#      Delete all files from the current directory that are normally
#      created by building the program.	 Don't delete the files that
#      record the configuration.  Also preserve files that could be made
#      by building, but normally aren't because the distribution comes
#      with them.
#
#      Delete `.dvi' files here if they are not part of the distribution.
# 
# make distclean
#      Delete all files from the current directory that are created by
#      configuring or building the program.  If you have unpacked the
#      source and built the program without creating any other files,
#      `make distclean' should leave only the files that were in the
#      distribution.
# 
# make maintainer-clean
#      Delete everything from the current directory that can be
#      reconstructed with this Makefile.  This typically includes
#      everything deleted by distclean, plus more: C source files
#      produced by Bison, tags tables, info files, and so on.
#
# make extraclean
#      Still more severe - delete backup and autosave files, too.

SHELL = /bin/sh

# If Make doesn't predefine MAKE, set it here.
@SET_MAKE@

# ==================== Things `configure' Might Edit ====================

CC=@CC@
CPP=@CPP@
C_SWITCH_SYSTEM=@c_switch_system@
ALLOCA=@ALLOCA@
LN_S=@LN_S@
CFLAGS=@CFLAGS@
C_SWITCH_X_SITE=@C_SWITCH_X_SITE@
LD_SWITCH_X_SITE=@LD_SWITCH_X_SITE@
YACC=@YACC@

### These help us choose version- and architecture-specific directories
### to install files in.

### This should be the number of the Emacs version we're building,
### like `18.59' or `19.0'.
version=@version@

### This should be the name of the configuration we're building Emacs
### for, like `mips-dec-ultrix' or `sparc-sun-sunos'.
configuration=@configuration@

# ==================== Where To Install Things ====================

# The default location for installation.  Everything is placed in
# subdirectories of this directory.  The default values for many of
# the variables below are expressed in terms of this one, so you may
# not need to change them.  This defaults to /usr/local.
prefix=@prefix@

# Like `prefix', but used for architecture-specific files.
exec_prefix=@exec_prefix@

# Where to install Emacs and other binaries that people will want to
# run directly (like etags).
bindir=@bindir@

# Where to install architecture-independent data files.	 ${lispdir}
# and ${etcdir} are subdirectories of this.
datadir=@datadir@

# Where to install and expect the files that Emacs modifies as it
# runs.	 These files are all architecture-independent. Right now, the
# only such data is the locking directory; ${lockdir} is a
# subdirectory of this.
sharedstatedir=@sharedstatedir@

# Where to install and expect executable files to be run by Emacs
# rather than directly by users, and other architecture-dependent
# data.	 ${archlibdir} is a subdirectory of this.
libexecdir=@libexecdir@

# Where to install Emacs's man pages, and what extension they should have.
mandir=@mandir@
manext=.1
man1dir=$(mandir)/man1

# Where to install and expect the info files describing Emacs.	In the
# past, this defaulted to a subdirectory of ${prefix}/lib/emacs, but
# since there are now many packages documented with the texinfo
# system, it is inappropriate to imply that it is part of Emacs.
infodir=@infodir@

# Where to look for bitmap files.
bitmapdir=@bitmapdir@

# Where to find the source code.  The source code for Emacs's C kernel is
# expected to be in ${srcdir}/src, and the source code for Emacs's
# utility programs is expected to be in ${srcdir}/lib-src.  This is
# set by the configure script's `--srcdir' option.
srcdir=@srcdir@

# Tell make where to find source files; this is needed for the makefiles.
VPATH=@srcdir@

# ==================== Emacs-specific directories ====================

# These variables hold the values Emacs will actually use.  They are
# based on the values of the standard Make variables above.

# Where to install the lisp files distributed with
# Emacs.  This includes the Emacs version, so that the
# lisp files for different versions of Emacs will install
# themselves in separate directories.
lispdir=@lispdir@

# Directories Emacs should search for lisp files specific
# to this site (i.e. customizations), before consulting
# ${lispdir}.  This should be a colon-separated list of
# directories.
locallisppath=@locallisppath@

# Where Emacs will search to find its lisp files.  Before
# changing this, check to see if your purpose wouldn't
# better be served by changing locallisppath.  This
# should be a colon-separated list of directories.
lisppath=@lisppath@

# Where Emacs will search for its lisp files while
# building.  This is only used during the process of
# compiling Emacs, to help Emacs find its lisp files
# before they've been installed in their final location.
# It's usually identical to lisppath, except that 
# it does not include locallisppath, and the
# entry for the directory containing the installed lisp
# files has been replaced with ../lisp.  This should be a
# colon-separated list of directories.
buildlisppath=${srcdir}/lisp

# Where to install the other architecture-independent
# data files distributed with Emacs (like the tutorial,
# the cookie recipes and the Zippy database). This path
# usually contains the Emacs version number, so the data
# files for multiple versions of Emacs may be installed
# at once.
etcdir=@etcdir@

# Where to create and expect the locking directory, where
# the Emacs locking code keeps track of which files are
# currently being edited.
lockdir=@lockdir@

# Where to put executables to be run by Emacs rather than
# the user.  This path usually includes the Emacs version
# and configuration name, so that multiple configurations
# for multiple versions of Emacs may be installed at
# once.
archlibdir=@archlibdir@

# Where to put the docstring file.
docdir=@docdir@

# ==================== Utility Programs for the Build ====================

# Allow the user to specify the install program.
INSTALL = @INSTALL@
INSTALL_PROGRAM = @INSTALL_PROGRAM@
INSTALL_DATA = @INSTALL_DATA@

# ============================= Targets ==============================

# What emacs should be called when installed.
EMACS = emacs

# Subdirectories to make recursively.  `lisp' is not included
# because the compiled lisp files are part of the distribution
# and you cannot remake them without installing Emacs first.
SUBDIR = lib-src src

# The makefiles of the directories in $SUBDIR.
SUBDIR_MAKEFILES = lib-src/Makefile man/Makefile src/Makefile oldXMenu/Makefile lwlib/Makefile

# Subdirectories to install, and where they'll go.
# lib-src's makefile knows how to install it, so we don't do that here.
# When installing the info files, we need to do special things to
# avoid nuking an existing dir file, so we don't do that here;
# instead, we have written out explicit code in the `install' targets.
COPYDIR = ${srcdir}/etc ${srcdir}/lisp
COPYDESTS = ${etcdir} ${lispdir}

all:	paths-force ${SUBDIR}

removenullpaths=sed -e 's/^://g' -e 's/:$$//g' -e 's/::/:/g'

# Note that sed is not in /bin on 386bsd.
src/paths.h: Makefile ${srcdir}/src/paths.in
	@echo "Producing \`src/paths.h' from \`src/paths.in'."
	@(lisppath=`echo ${lisppath} | ${removenullpaths}` ;		\
	  buildlisppath=`echo ${buildlisppath} | ${removenullpaths}` ;	\
	  sed < ${srcdir}/src/paths.in > paths.h.$$$$		\
	  -e 's;\(#.*PATH_LOADSEARCH\).*$$;\1 "'$${lisppath}'";'	\
	  -e 's;\(#.*PATH_DUMPLOADSEARCH\).*$$;\1 "'$${buildlisppath}'";' \
	  -e 's;\(#.*PATH_EXEC\).*$$;\1 "${archlibdir}";'		\
	  -e 's;\(#.*PATH_INFO\).*$$;\1 "${infodir}";'			\
	  -e 's;\(#.*PATH_DATA\).*$$;\1 "${etcdir}";'			\
	  -e 's;\(#.*PATH_BITMAPS\).*$$;\1 "${bitmapdir}";'		\
	  -e 's;\(#.*PATH_DOC\).*$$;\1 "${docdir}";'			\
	  -e 's;\(#.*PATH_LOCK\).*$$;\1 "${lockdir}/";') &&		\
	${srcdir}/move-if-change paths.h.$$$$ src/paths.h

# For `make all',
# we force the rebuilding of src/paths.h because the user might give
# make different values for the various directories.  Since we use
# move-if-change, src/paths.h only actually changes if the user did
# something notable, so the only unnecessary work we do is in building
# paths.h.$$, which isn't much.
# Note that sed is not in /bin on 386bsd.
# We depend on src/paths.h here to prevent simultaneous execution of
# that rule and this one, in a parallel make.
# It is possible for paths.h to be updated twice--but that would happen anyway.
paths-force: FRC src/paths.h
	@echo "Producing \`src/paths.h' from \`src/paths.in'."
	@(lisppath=`echo ${lisppath} | ${removenullpaths}` ;		\
	  buildlisppath=`echo ${buildlisppath} | ${removenullpaths}` ;	\
	  sed < ${srcdir}/src/paths.in > paths.h.$$$$		\
	  -e 's;\(#.*PATH_LOADSEARCH\).*$$;\1 "'$${lisppath}'";'	\
	  -e 's;\(#.*PATH_DUMPLOADSEARCH\).*$$;\1 "'$${buildlisppath}'";' \
	  -e 's;\(#.*PATH_EXEC\).*$$;\1 "${archlibdir}";'		\
	  -e 's;\(#.*PATH_INFO\).*$$;\1 "${infodir}";'			\
	  -e 's;\(#.*PATH_DATA\).*$$;\1 "${etcdir}";'			\
	  -e 's;\(#.*PATH_BITMAPS\).*$$;\1 "${bitmapdir}";'		\
	  -e 's;\(#.*PATH_DOC\).*$$;\1 "${docdir}";'			\
	  -e 's;\(#.*PATH_LOCK\).*$$;\1 "${lockdir}/";') &&		\
	${srcdir}/move-if-change paths.h.$$$$ src/paths.h

src:	lib-src FRC src/paths.h

# This ought to depend on src/paths.h, so that in parallel make
# src/paths.h will be available for the compilations in lib-src.
# But that causes trouble in `make install' if a different prefix
# is specified at that time.
lib-src: FRC src/paths.h

.RECURSIVE: ${SUBDIR}

${SUBDIR}: ${SUBDIR_MAKEFILES} FRC
	cd $@; $(MAKE) all $(MFLAGS) \
	  CC='${CC}' CFLAGS='${CFLAGS}' CPPFLAGS='${CPPFLAGS}' \
	  LDFLAGS='${LDFLAGS}' MAKE='${MAKE}'

blessmail: ${SUBDIR_MAKEFILES} src FRC
	cd lib-src; $(MAKE) maybe-blessmail $(MFLAGS) \
	  MAKE='${MAKE}' archlibdir='$(archlibdir)'

Makefile: Makefile.in config.status
	./config.status

src/Makefile: src/Makefile.in config.status
	./config.status

lib-src/Makefile: lib-src/Makefile.in config.status
	./config.status

oldXMenu/Makefile: oldXMenu/Makefile.in config.status
	./config.status

lwlib/Makefile: lwlib/Makefile.in config.status
	./config.status

# ==================== Installation ====================

## If we let lib-src do its own installation, that means we
## don't have to duplicate the list of utilities to install in
## this Makefile as well.

## On AIX, use tar xBf.
## On Xenix, use tar xpf.

.PHONY: install mkdir

## We delete each directory in ${COPYDESTS} before we copy into it;
## that way, we can reinstall over directories that have been put in
## place with their files read-only (perhaps because they are checked
## into RCS).  In order to make this safe, we make sure that the
## source exists and is distinct from the destination.
## We don't depend on `all', but rather on ${SUBDIR}, so that we won't
## ever modify src/paths.h.
install: ${SUBDIR} install-arch-indep install-arch-dep blessmail
	@true

### Install the executables that were compiled specifically for this machine.
### This depends on install-arch-indep because
### the executable needs the Lisp files and DOC file to work properly.
install-arch-dep: mkdir install-arch-indep
	(cd lib-src; \
	  $(MAKE) install $(MFLAGS) prefix=${prefix} \
	    exec_prefix=${exec_prefix} bindir=${bindir} \
	    libexecdir=${libexecdir} archlibdir=${archlibdir})
	${INSTALL_PROGRAM} src/emacs ${bindir}/emacs-${version}
	-chmod 1755  ${bindir}/emacs-${version}
	rm -f ${bindir}/$(EMACS)
	-ln ${bindir}/emacs-${version} ${bindir}/$(EMACS)

### Install the files that are machine-independent.
### Most of them come straight from the distribution;
### the exception is the DOC-* files, which are copied
### from the build directory.

### Note that we copy DOC* and then delete DOC
### as a workaround for a bug in tar on Ultrix 4.2.
install-arch-indep: mkdir
	-set ${COPYDESTS} ; \
	for dir in ${COPYDIR} ; do \
	  if [ `(cd $$1 && /bin/pwd)` != `(cd $${dir} && /bin/pwd)` ] ; then \
	    rm -rf $$1 ; \
	  fi ; \
	  shift ; \
	done
	-set ${COPYDESTS} ; \
	mkdir ${COPYDESTS} ; \
	chmod ugo+rx ${COPYDESTS} ; \
	for dir in ${COPYDIR} ; do \
	  dest=$$1 ; shift ; \
	  [ -d $${dir} ] \
	  && [ `(cd $${dir} && /bin/pwd)` != `(cd $${dest} && /bin/pwd)` ] \
	  && (echo "Copying $${dir} to $${dest}..." ; \
	      (cd $${dir}; tar -cf - . )|(cd $${dest};umask 022; tar -xvf - ); \
	      for subdir in `find $${dest} -type d ! -name RCS -print` ; do \
		rm -rf $${subdir}/RCS ; \
		rm -rf $${subdir}/CVS ; \
		rm -f  $${subdir}/\#* ; \
		rm -f  $${subdir}/.\#* ; \
		rm -f  $${subdir}/*~ ; \
		rm -f  $${subdir}/*.orig ; \
		rm -f  $${subdir}/[mM]akefile* ; \
		rm -f  $${subdir}/ChangeLog* ; \
		rm -f  $${subdir}/dired.todo ; \
	      done) ; \
	done
	-rm -f ${lispdir}/subdirs.el
	$(srcdir)/update-subdirs ${lispdir}
	-chmod -R a+r ${COPYDESTS}
	if [ `(cd ./etc; /bin/pwd)` != `(cd ${docdir}; /bin/pwd)` ]; \
	then \
	   echo "Copying etc/DOC-* to ${docdir} ..." ; \
	   (cd etc; tar -cf - DOC*)|(cd ${docdir}; umask 0; tar -xvf - ); \
	   (cd $(docdir); chmod a+r DOC*; rm DOC) \
	else true; fi
	if [ x`(cd ./lisp; /bin/pwd)` != x`(cd ${lispdir}; /bin/pwd)` ] \
	   && [ x`(cd ${srcdir}/lisp; /bin/pwd)` != x`(cd ./lisp; /bin/pwd)` ]; \
	then \
	   echo "Copying lisp/*.el and lisp/*.elc to ${lispdir} ..." ; \
	   (cd lisp; tar -cf - *.el *.elc)|(cd ${lispdir}; umask 0; tar -xvf - ); \
	else true; fi
	thisdir=`/bin/pwd`; \
	if [ `(cd ${srcdir}/info && /bin/pwd)` != `(cd ${infodir} && /bin/pwd)` ]; \
	then \
	  (cd ${infodir};  \
	   if [ -f dir ]; then \
	     if [ ! -f dir.old ]; then mv -f dir dir.old; \
	     else mv -f dir dir.bak; fi; \
	   fi; \
	   cd ${srcdir}/info ; \
	   (cd $${thisdir}; ${INSTALL_DATA} ${srcdir}/info/dir ${infodir}/dir); \
	   (cd $${thisdir}; chmod a+r ${infodir}/dir); \
	   for f in ccmode* cl* dired-x* ediff* emacs* forms* gnus* info* mh-e* sc* vip*; do \
	     (cd $${thisdir}; \
	      ${INSTALL_DATA} ${srcdir}/info/$$f ${infodir}/$$f; \
	      chmod a+r ${infodir}/$$f); \
	   done); \
	else true; fi
	thisdir=`/bin/pwd`; \
	cd ${srcdir}/etc; \
	for page in emacs etags ctags ; do \
	  (cd $${thisdir}; \
	   ${INSTALL_DATA} ${srcdir}/etc/$${page}.1 ${man1dir}/$${page}${manext}; \
	   chmod a+r ${man1dir}/$${page}${manext}); \
	done

### Build all the directories we're going to install Emacs in.	Since
### we may be creating several layers of directories (for example,
### /usr/local/lib/emacs/19.0/mips-dec-ultrix4.2), we use mkinstalldirs
### instead of mkdir.  Not all systems' mkdir programs have the `-p' flag.
mkdir: FRC
	$(srcdir)/mkinstalldirs ${COPYDESTS} ${lockdir} ${infodir} ${man1dir} \
	  ${bindir} ${datadir} ${docdir} ${libexecdir} \
	  `echo ${locallisppath} | sed 's/:/ /g'`
	-chmod a+rwx ${lockdir}

### Delete all the installed files that the `install' target would
### create (but not the noninstalled files such as `make all' would
### create).
###
### Don't delete the lisp and etc directories if they're in the source tree.
uninstall:
	(cd lib-src; 					\
	 $(MAKE) $(MFLAGS) uninstall			\
	    prefix=${prefix} exec_prefix=${exec_prefix}	\
	    bindir=${bindir} libexecdir=${libexecdir} archlibdir=${archlibdir})
	for dir in ${lispdir} ${etcdir} ; do 		\
	  if [ -d $${dir} ]; then			\
	    case `(cd $${dir} ; /bin/pwd)` in		\
	      `(cd ${srcdir} ; /bin/pwd)`* ) ;;		\
	      * ) rm -rf $${dir} ;;			\
	    esac ;					\
	    case $${dir} in				\
	      ${datadir}/emacs/${version}/* )		\
	        rm -rf ${datadir}/emacs/${version}	\
	      ;;					\
	    esac ;					\
	  fi ;						\
	done
	(cd ${infodir} && rm -f cl* dired-x* ediff* emacs* forms* gnus* info* mh-e* sc* vip*)
	(cd ${man1dir}  && rm -f emacs.1 etags.1 ctags.1)
	(cd ${bindir}  && rm -f emacs-${version} $(EMACS))


FRC:

# ==================== Cleaning up and miscellanea ====================

.PHONY: mostlyclean clean distclean maintainer-clean extraclean

### `mostlyclean'
###      Like `clean', but may refrain from deleting a few files that people
###      normally don't want to recompile.  For example, the `mostlyclean'
###      target for GCC does not delete `libgcc.a', because recompiling it
###      is rarely necessary and takes a lot of time.
mostlyclean: FRC
	(cd src;      $(MAKE) $(MFLAGS) mostlyclean)
	(cd oldXMenu; $(MAKE) $(MFLAGS) mostlyclean)
	(cd lwlib;    $(MAKE) $(MFLAGS) mostlyclean)
	(cd lib-src;  $(MAKE) $(MFLAGS) mostlyclean)
	-(cd man &&   $(MAKE) $(MFLAGS) mostlyclean)

### `clean'
###      Delete all files from the current directory that are normally
###      created by building the program.  Don't delete the files that
###      record the configuration.  Also preserve files that could be made
###      by building, but normally aren't because the distribution comes
###      with them.
### 
###      Delete `.dvi' files here if they are not part of the distribution.
clean: FRC
	(cd src;      $(MAKE) $(MFLAGS) clean)
	(cd oldXMenu; $(MAKE) $(MFLAGS) clean)
	(cd lwlib;    $(MAKE) $(MFLAGS) clean)
	(cd lib-src;  $(MAKE) $(MFLAGS) clean)
	-(cd man &&   $(MAKE) $(MFLAGS) clean)

### `distclean'
###      Delete all files from the current directory that are created by
###      configuring or building the program.  If you have unpacked the
###      source and built the program without creating any other files,
###      `make distclean' should leave only the files that were in the
###      distribution.
top_distclean=\
	rm -f config.status config.cache config.log ; \
	rm -f Makefile ${SUBDIR_MAKEFILES} ; \
	(cd lock && rm -f *)
distclean: FRC
	(cd src;      $(MAKE) $(MFLAGS) distclean)
	(cd oldXMenu; $(MAKE) $(MFLAGS) distclean)
	(cd lwlib;    $(MAKE) $(MFLAGS) distclean)
	(cd lib-src;  $(MAKE) $(MFLAGS) distclean)
	(cd man &&    $(MAKE) $(MFLAGS) distclean)
	${top_distclean}

### `maintainer-clean'
###      Delete everything from the current directory that can be
###      reconstructed with this Makefile.  This typically includes
###      everything deleted by distclean, plus more: C source files
###      produced by Bison, tags tables, info files, and so on.
### 
###      One exception, however: `make maintainer-clean' should not delete
###      `configure' even if `configure' can be remade using a rule in the
###      Makefile.  More generally, `make maintainer-clean' should not delete
###      anything that needs to exist in order to run `configure' and then
###      begin to build the program.
maintainer-clean: FRC
	(cd src;      $(MAKE) $(MFLAGS) maintainer-clean)
	(cd oldXMenu; $(MAKE) $(MFLAGS) maintainer-clean)
	(cd lwlib;    $(MAKE) $(MFLAGS) maintainer-clean)
	(cd lib-src;  $(MAKE) $(MFLAGS) maintainer-clean)
	-(cd man &&   $(MAKE) $(MFLAGS) maintainer-clean)
	${top_distclean}

### This doesn't actually appear in the coding standards, but Karl
### says GCC supports it, and that's where the configuration part of
### the coding standards seem to come from.  It's like distclean, but
### it deletes backup and autosave files too.
extraclean:
	for i in ${SUBDIR}; do (cd $$i; $(MAKE) $(MFLAGS) extraclean); done
	${top_distclean}
	-rm config-tmp-*
	-rm -f *~ \#*

### Unlocking and relocking.  The idea of these productions is to reduce
### hassles when installing an incremental tar of Emacs.  Do `make unlock'
### before unlocking the file to take the write locks off all sources so
### that tar xvof will overwrite them without fuss.  Then do `make relock'
### afterward so that VC mode will know which files should be checked in
### if you want to mung them.
###
### Note: it's no disaster if these productions miss a file or two; tar
### and VC will swiftly let you know if this happens, and it is easily
### corrected.
SOURCES = ChangeLog GETTING.GNU.SOFTWARE INSTALL Makefile.in PROBLEMS \
	README configure make-dist move-if-change

.PHONY: unlock relock

unlock:
	chmod u+w $(SOURCES) cpp/*
	-(cd elisp; chmod u+w Makefile README *.texi)
	(cd etc; $(MAKE) $(MFLAGS) unlock)
	(cd lib-src; $(MAKE) $(MFLAGS) unlock)
	(cd lisp; $(MAKE) $(MFLAGS) unlock)
	(cd lisp/term; chmod u+w README *.el)
	(cd man; chmod u+w *texi* ChangeLog split-man)
	(cd oldXMenu; chmod u+w *.[ch] Makefile README)
	(cd lwlib; chmod u+w *.[ch] Makefile README)
	(cd src; $(MAKE) $(MFLAGS) unlock)

relock:
	chmod u-w $(SOURCES) cpp/*
	-(cd elisp; chmod u-w Makefile README *.texi)
	(cd etc; $(MAKE) $(MFLAGS) relock)
	(cd lib-src; $(MAKE) $(MFLAGS) relock)
	(cd lisp; $(MAKE) $(MFLAGS) relock)
	(cd lisp/term; chmod u+w README *.el)
	(cd man; chmod u+w *texi* ChangeLog split-man)
	(cd oldXMenu; chmod u+w *.[ch] Makefile README)
	(cd lwlib; chmod u+w *.[ch] Makefile README)
	(cd src; $(MAKE) $(MFLAGS) relock)

TAGS tags:	lib-src
	cd ${srcdir}/src; $(MAKE) tags

check:
	@echo "We don't have any tests for GNU Emacs yet."

dist:
	$(srcdir)/update-subdirs ${srcdir}/lisp
	cd ${srcdir}; make-dist

.PHONY: info dvi dist check
force-info:
info: force-info
	(cd ${srcdir}/man; $(MAKE) $(MFLAGS) info)
dvi:
	(cd man; $(MAKE) $(MFLAGS) dvi)
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.